BIOD 151 lab 3 key terms (Portage)

BIOD 151 lab 3 key terms (Portage) fibrous connective tissue A dense tissue with large numbers of collagenous fibers organized into parallel bundles. This is the dominant tissue in tendons and ligaments. bone Dense, hard connective tissue composing the skeleton. All bones are classified according to their shape. Cartilage cells are called chondrocytes that secrete the gel-like ground substance around themselves. contains no blood vessels; instead the blood vessels lay around it and drop off nutrients, which then diffuse through the cartilage blood Connective tissue made of plasma, erythrocytes, leukocytes, and platelets. made up of cells and extracellular matrix Matrix plasma . fibers special proteins such as antibodies and clotting proteins Ectoderm outermost germ layer; produces sense organs, nerves, and outer layer of skin Mesoderm middle germ layer; develops into muscles, and much of the circulatory, reproductive, and excretory systems Endoderm innermost germ layer; develops into the linings of the digestive tract and much of the respiratory system Mesenchyme The jellylike substance that separates the epidermis from the inner cells in a sponge Hemocytoblasts a stem cell for blood-cellular elements; especially : one considered competent to produce all types of blood cell—called also lymphoidocyte. Fibroblasts biological cell that synthesizes the extracellular matrix and collagen, produces the structural framework (stroma) for animal tissues, and plays a critical role in wound healing. they are the most common cells of connective tissues in animals. Chondroblasts cartilage-forming cells that produce the matrix Osteoblasts bone forming cells Osteocytes a bone cell, formed when an osteoblast becomes embedded in the matrix it has secreted. Macrophages Found within the lymph nodes, they are phagocytes that destroy bacteria, cancer cells, and other foreign matter in the lymphatic stream.